Ctrl + Alt + M opens Mindmanager / Can't write "µ" anymore
we have a couple of users of the current version of Mindmanager in our company. Since a lot of them are working in the R&D department they need to use the µ - symbol quiet often, but non of them is able to write it anymore. Whenever the necessary keycombo is pressed on a german keyboard layout (Alt Gr + M or Ctrl + Alt + M) Mindmanager opens, no matter where you are in Windows.
Is there any way to stop this behavior?